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Prussian blue pigment is significant since it was the first stable and relatively lightfast blue pigment to be widely used since the loss of knowledge regarding the synthesis of Egyptian blue. European painters had previously used a number of pigments such as indigo dye , smalt , and Tyrian purple , and the extremely expensive ultramarine made ...
Blue is used by the NATO Military Symbols for Land Based Systems to denote friendly forces, hence the term "blue on blue" for friendly fire, and Blue Force Tracking for location of friendly units. The People's Liberation Army of China (formerly known as the "Red Army") uses the term "Blue Army" to refer to hostile forces during exercises.
Beginning in the 1820s, Prussian blue was imported into Japan through the port of Nagasaki. It was called bero-ai, or Berlin blue, and it became popular because it did not fade like traditional Japanese blue pigment, ai-gami, made from the dayflower. Prussian blue was used by both Hokusai, in his wave paintings, and Hiroshige. [27]
The use of Prussian blue and other dyes (often in conjunction with bonding treatments) to "enhance” its appearance, make uniform or completely change the colour, is regarded as fraudulent by some purists, [39] especially since some dyes may fade or rub off on the wearer. Dyes have also been used to darken the veins of turquoise.
Hiroshige also used Prussian blue extensively in his landscape prints. Other prominent Japanese artists to use it included Keisai Eisen , Utagawa Kunisada and Utagawa Sadahide . The theory that aizuri-e production was prompted by the 1842 sumptuary laws known as the TenpÅ Reforms is no longer widely accepted.
Engineer's blue is prepared by mixing Prussian blue with a non-drying oily material (for example, grease).The coloured oil is rubbed onto a reference surface, and the workpiece is then rubbed against the coloured reference; the transfer (by contact) of the pigment indicates the position of high spots on the workpiece or conversely highlight low points. [1]
War flag of Prussia (1816). The Black Cross (Schwarzes Kreuz) is the emblem used by the Prussian Army and Germany's army from 1871 to the present.It was designed on the occasion of the German Campaign of 1813, when Friedrich Wilhelm III of Prussia commissioned the Iron Cross as the first military decoration open to all ranks, including enlisted men.
These consisted of a short blue jacket with red facings, fez, red or blue pants, a red sash and a blue waistcoat with brass buttons or alternatively a red overshirt. The late-war sack coat was copied from the fatigue jacket worn by the 19th century Prussian Army. The Hardee hat was inspired by the headgear of the Danish Army but was later ...